Quote:
Originally Posted by jimhoward
Is it just psychological or is the hot water wait time actually reduced if you increase the hot water temperature.
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I actually compared mine when I bumped it from 120 to 135 based on the advice of a retired plumber that lives on my street. I was skeptical, so I wanted numbers to validate that it actually did anything.
I don't remember the exact numbers but it was around 60 seconds to warm up previously on an average day. Now it's closer to 30 seconds to hit maximum heat. This is for my master bedroom shower which is at the opposite end of the house from the on demand water heater.
I can get it to heat up even faster if I run the master bathroom hot taps at the same time.